Do you have a buddy mechanic or you could come to Colorado and I'll do it for you. 70 bucks is about the normal fee. Todays quality scanners are about $3800.00 plus $1000.00 a year on updates so out weigh the the cost. In perspective it is pretty cheap. :)
Your 96 has an OBDII system. All AZ has is a code reader for EMISSION related codes. You need to find someone with a Snap-on scanner or equivalent to read this code. DO NOT CLEAR the code until you repair it. It may be an intermittent problem that comes and goes. If you clear it you erase ALL...